This is cutadapt 2.8 with Python 3.7.4 Command line parameters: -a C{9} -m 20 -o TP11.trim.fastq TP11.fastq Processing reads on 1 core in single-end mode ... Finished in 1.42 s (16 us/read; 3.66 M reads/minute). === Summary === Total reads processed: 86,352 Reads with adapters: 9,436 (10.9%) Reads that were too short: 629 (0.7%) Reads written (passing filters): 85,723 (99.3%) Total basepairs processed: 5,267,472 bp Total written (filtered): 5,097,303 bp (96.8%) === Adapter 1 === Sequence: CCCCCCCCC; Type: regular 3'; Length: 9; Trimmed: 9436 times; Reverse-complemented: 0 times No. of allowed errors: 0-9 bp: 0 Bases preceding removed adapters: A: 45.9% C: 0.0% G: 19.9% T: 34.0% none/other: 0.1% Overview of removed sequences length count expect max.err error counts 3 1349 1349.2 0 1349 4 665 337.3 0 665 5 426 84.3 0 426 6 397 21.1 0 397 7 306 5.3 0 306 8 281 1.3 0 281 9 273 0.3 0 273 10 234 0.3 0 234 11 221 0.3 0 221 12 252 0.3 0 252 13 279 0.3 0 279 14 242 0.3 0 242 15 194 0.3 0 194 16 200 0.3 0 200 17 226 0.3 0 226 18 207 0.3 0 207 19 169 0.3 0 169 20 185 0.3 0 185 21 175 0.3 0 175 22 182 0.3 0 182 23 201 0.3 0 201 24 190 0.3 0 190 25 166 0.3 0 166 26 165 0.3 0 165 27 190 0.3 0 190 28 155 0.3 0 155 29 148 0.3 0 148 30 122 0.3 0 122 31 123 0.3 0 123 32 116 0.3 0 116 33 109 0.3 0 109 34 106 0.3 0 106 35 99 0.3 0 99 36 78 0.3 0 78 37 95 0.3 0 95 38 77 0.3 0 77 39 64 0.3 0 64 40 65 0.3 0 65 41 75 0.3 0 75 42 61 0.3 0 61 43 65 0.3 0 65 44 65 0.3 0 65 45 55 0.3 0 55 46 46 0.3 0 46 47 46 0.3 0 46 48 46 0.3 0 46 49 59 0.3 0 59 50 36 0.3 0 36 51 30 0.3 0 30 52 19 0.3 0 19 53 16 0.3 0 16 54 19 0.3 0 19 55 18 0.3 0 18 56 10 0.3 0 10 57 5 0.3 0 5 58 3 0.3 0 3 59 7 0.3 0 7 60 9 0.3 0 9 61 14 0.3 0 14